In urban areas, light pollution obscures the starry sky.

My new computer can read optical discs.

Optical communication is a very efficient method for data transmission.

The moon is shining brightly.

A high-speed optical line is installed in my house.

Keihou is my best friend.

I am planning to go to Baotou next week.

I love xiaolongbao.

He is scheduled to have surgery for phimosis.

I have bread and coffee for breakfast every morning.